package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // TODO 已修改md5加密
        password=DigestUtils.md5DigestAsHex(password.getBytes()); //md5加密
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }


    //新增员工
    @Override
    public void save(EmployeeDTO employeeDTO) {
        Employee employee = new Employee();
        //BeanUtils是spb的类 这个方法是对象属性拷贝  把第一个对象的属性拷贝到第二个对象 两对象属性名要一致
        BeanUtils.copyProperties(employeeDTO, employee);

        //设置帐号状态 1为正常 ENABLE   0异常
        employee.setStatus(StatusConstant.ENABLE);

        //密码默认123456  MD5加密
        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        //设置创建和更新修改时间  !!
       // employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());

        //设置记录创建人id和修改人id  ThreadLocal获取id  只能线程内访问
        //TODO  已修改
        //employee.setCreateUser(BaseContext.getCurrentId());
        //employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.insert(employee);
    }

    //分页查询
    @Override
    public PageResult pageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());  //(开始的页码,展示的记录数)
        Page<Employee> page=employeeMapper.pageQuery(employeePageQueryDTO);

        //获取PageResult的属性  构造PageResult后返回
        long total=page.getTotal();
        List<Employee> records=page.getResult();
        return new PageResult(total,records);
    }

    //启用禁用账号
    @Override
    public void startOrStop(Integer status, Long id) {

        Employee employee=Employee.builder()
                .status(status)
                .id(id)
                .build();

        employeeMapper.update(employee);
        
    }

    //根据id查询
    @Override
    public Employee getByid(Long id) {
        Employee employee=employeeMapper.getByid(id);
        employee.setPassword("****");  //加强安全性
        return employee;
    }

    //编辑员工信息
    @Override
    public void update(EmployeeDTO employeeDTO) {
        //mapping的update要传employee类型  进行转换
        Employee employee=new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);

        //更新操作时间和操作人员id
        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setUpdateUser(BaseContext.getCurrentId());

        employeeMapper.update(employee);
    }

}
